Recommended Procedure:: E-Series
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Remove the plug from the front of the fuel filter housing. Install Adapter 303-765 and Gauge 0-1.1 MPa (0-160 psi) Bar 014-00761 or equivalent. Measure fuel pressure in crank or run. If fuel pressure is below the specification of 310 kPa (45 psi), go to the next step to verify no restriction.